IR 125 Singlet oxygen

Lougnot, D.J.; Lepaja, S.; Fouassier, J.P.
J. Chim. Phys. Phys.-Chim. Biol. 79, 617-628 (1982)

Reaction: 2-[7-(1,3-dihydro-1,1-dimethyl-3-(sulfobutyl)benz[e]indol-2-ylidene]-1,3,5-heptatrienyl]-1,1-dimethyl-3-(sulfobutyl)benz[e]indolium, hydroxide, inner salt, Na salt + ¹O₂^* ® products
Solvent: DMSO

k_react = 2.5 × 10⁵(L mol^-1 s^-1), T = 295K

Experimental method: Photolysis
Analytical method: colorimetry
Data type: Derived from steady state measurements
Excitation wavelength: 514 nm

Photosensitizer = Thionine; used solvent k_d = 1.3 × 10⁴ s^-1; used singlet oxygen quantum yield for sensitizer = 0.87.

Lougnot, D.J.; Lepaja, S.; Fouassier, J.P.
J. Chim. Phys. Phys.-Chim. Biol. 79, 617-628 (1982)

Reaction: 2-[7-(1,3-dihydro-1,1-dimethyl-3-(sulfobutyl)benz[e]indol-2-ylidene]-1,3,5-heptatrienyl]-1,1-dimethyl-3-(sulfobutyl)benz[e]indolium, hydroxide, inner salt, Na salt + ¹O₂^* ® products
Solvent: CH₃OH

k_react = 1.5 × 10⁶(L mol^-1 s^-1), T = 295K

Experimental method: Photolysis
Analytical method: colorimetry
Data type: Derived from steady state measurements
Excitation wavelength: 514 nm

Photosensitizer = Thionine; used solvent k_d = 1.4 × 10⁵ s^-1; used singlet oxygen quantum yield for sensitizer = 0.87.